To me, its pretty much the same as Iceman hitting absolute zero. 

" @SC: Not going to happen? "

No its not feasible at all because physics simply doesn't work like that,  and neither does chemistry

The only way I could see it justifiable if DC wanted to amp up the science aspect, is if they made Flash a high end reality warper lol which could be funny for a few issues... oh and I wish they would clarify the whole faster than thought thing too... 

" No its not feasible at all because physics simply doesn't work like that,  and neither does chemistry "

Well, supposedly when the Flash approaches light speed, his mass increases. Which, as mentioned, would probably tear the planet apart. It would be like a black hole suddenly appearing on the surface of the Earth. Of course, time would also slow down for him. But I thought the whole point of making a "speed force" was so he wouldn't be subject to realistic effects of moving at super speeds, if they're going to make this happen, why not make his body burn up from the friction of the air?

I believe technically, Flash could actually Infinity Mass Spit at people too. He should carry around small metal ball bearings, load up his mouth and go around killing well, all bad guys. Infinite Mass Spit would be unstoppable. Speed Force would prevent break up and maintain cohesion of the infinite mass of spit coated ball, and anything thats infinite mass, going that fast, will do some absolute dead damage to anyone doesn't have huge holes in their body or head, but I mean, no character like that would ever be made. 

" I believe technically, Flash could actually Infinity Mass Spit at people too. He should carry around small metal ball bearings, load up his mouth and go around killing well, all bad guys. Infinite Mass Spit would be unstoppable. Speed Force would prevent break up and maintain cohesion of the infinite mass of spit coated ball, and anything thats infinite mass, going that fast, will do some absolute dead damage to anyone doesn't have huge holes in their body or head, but I mean, no character like that would ever be made.  "

It's just a name he doesn't actually reach the "infinite" mass mark it just seems like it is infinite mass because he builds enough momentum to augment his punch enough to knock the target a continent away. velocity=intensity more speed=more force, his only problem is his body is put under high levels of stress and if he moves fast enough he will eventually start to burn he just can't reach that speed without killing himself anyway

besides if his mass gets to a certain point he can't run making him an easy target and a liability to the team plus he'd have to pick up the extra mass from somewhere

@sup3rhulk: Untrue. DCU is not very consistent. It is shown at one point that he is able to vastly exceed the speed of light (which enables him to move freely between universes and dimensions. The Speed Force allows him the ability to run at such speeds anywhere without damaging neither him nor the environment like he realistically should. It acts like a force shield, containing the force he creates within him. As for the Infinite Mass Punch, it allows him to gain the mass of a white dwarf star, one of the most dense objects in the universe. By the laws of Physics, yes, he should not be able to move that fast nor gain that much mass or hit someone and they or the area survive. But since he can move fast enough to travel inter-dimensionally, it is safe to assume the laws of Quantum Mechanics has some part in his abilities. If you know a little about Quantum Mechanics, than you should know the theories don't always correlate with Reality; which justifies his abilities, since Much of DCU's logic is based on both principles of Magic, theories of Quantum, and beliefs of Theology. Very inconsistent.

How about Infinite Mass Ejaculate?

If one were in reality able to move such speeds as close to the speed of light then, yes it would be possible for such a thing to happen because with enough speed you would be able to generate enough momentum to pull it off

It is a very simple concept. Relativity.

First, we realize in order to accelerate an object, we need to overcome it's inertia (mass) If it is not overcome, the object will not accelerate. Inertia is directly proportional to mass. Thus, as inertia increases, mass increases.

Second, we must establish the rule that nothing can exceed the speed of light. So this means that as you approach the speed of light - or match it - You can try to accelerate as much as you want but you will not because the inertia is not being overcome as it is exponentially increasing. Thus so is your mass.

This is seen through the equation (Momentum/Mass = Velocity) where velocity is constant.

This leads to a possibility to achieve Infinite Mass. And if all that mass at such a velocity is all shot at one place, that is a lot of force.

There is also relative mass, but that involves more special relativity, which is fun, but not when writing it down.

Here is your brief and simple explanation.

How do I know? Well, I take physics. If I am wrong in anyway, Hit me.

it is true that at light speed velocity is infinite, but speed isn't so therefore mass must be

Theoretically such force would just kill everyone on impact including flash, so im just going to kindly assume that flash does not do punches near the speed of light

Acording to the theory of relativity he is infinitly strong when he does it